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各位 UL 987 30.3 关于运动部件护罩要求:+ w2 A" E, q' Y3 F$ H3 f
30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,, r# F; K5 c4 I. d% ^4 Q
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:" ]1 _( t1 {) L0 g
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;8 L$ C8 M5 H [ m8 o O' n
c) Strength and rigidity;: J/ s) J4 }( N9 ~, N8 ^$ N
d) Completeness; and
- A' s) C( f/ i# m! I' re) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,+ J3 o- d( G! J- K* _
restricted vision, or other conditions adversely affecting the ease of operation; and the necessity5 ~& \ E' y+ r( P" S3 ]
for additional handling because of increased need for servicing – such as cleaning, unjamming,
S: z& V- f; y! A0 _# Zand the like.
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其中的a 怎么理解?不用工具就可以拆掉的运动部件护罩可以接受吗? |
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